Composition for artificial stone



I I06. COMPOSITIONS,

men; 7 1y a COATING R PLASTIC.

EDWARD GALLAGHER, OF LOOK HA-V-EN, PENNSYLVANIA. I I COMPOSITION I'-OR ARTIFICIAL STONE.

srncrr'rcnrron forming part of Letters Patent No. 457,953, dated August 18, 1891.

Application filed April 8, 1891. Serial No. 388,170. (No specimens.)

To all whom it may concern:

Be it known that I, EDWARD GALLAGHER, a citizen of the United States, and a resident of .Lock Haven, in the county of Clinton and State of Pennsylvania, have invented certain new and useful Improvements in Artificial Stone;

and I do hereby declare that the followingis a full, clear, and exact description of the invention,'which will enable others skilled in the to art to which it appertains to make and use'the same.

This invention relates to compositions for artificial stone and manufactured articles (such as building-blocks, flag-stones, columns,

'15 and the like) from such material; and it consists in the peculiar compound or composition which will be hereinafter more fully described and claimed.

To prepare this material I mix the follow :0 ing ingredients in about the proportions set.

opposite to each, to wit: Peg-gang cement fifty pounds; clean, coarse, an slar san fifty pounds; plaster-of-paris, five poun s; powdered soaps one one pound; salt one pound. 'Iliese ingredients are'first mixed thoroughly in a dry state, after which I add by degrees and while stirring the mixture briskly from seven to ten gallonsof limewater prepared by slaking ten pounds ofi 6'j1me in ten gallons of water. This forms a Efmooth and glossy paste, which is then ready to be poured into molds of suitable size and shape, when the composition is allowed to set and harden. When sufliciently hard, the are 5 ticle is removed from the mold and is then eralllpiigments2 either by adding the same to e 1 ry lngre ients before mixing with the I lime-water op by dissolvin the i ments in the lime-watei beibre ad d ngthem. to theory ingredients.

mention. It willbe found equally well adapted This composition is adapted for use in the manufacture of all articles which can be made from artificial stone, such as building-blocks, columns, and carved capitals for-the same, ornamental window-sills and facings copings, tiles, and many other objects too numerous to to the laying of floors and sidewalks in a plastic state, and resists the action of frost 55, better than any o'fifimftificialstone' pavement with which I am acquainted. The mixing of the lin with the dry ingredients in theform of lime ater is of importance, as it is productive of better results than can be 6 attained by adding the lime in a dry state and then mixing with water. Experiments have abundantly demonstrated that artificial stone prepared according touny inyention possesses a degree of hardness and sinooth- 6 ness of texture which adapts it for all uses where natural stone has heretofore been employed, while it may be produced in suitable shapes at a greatly-reduced cost.

I am aware that several of the ingredients 7'- employed by me have been used before in diiferent combinations; but I am not aware that these ingredients have been used before in the specific combinationand in about the I proportions hereinbefore set forth. '75

What I claim, therefore, and desire to se-v cure by Letters Patent of the United States,

The described composition for artificial stone,consisting of cement,;,sand,plaster-of- 8o paris, powdered soafistdfi''aiid'filpnnxed 1n 1 ry state in abo e proportions set forth and'tli'e'n'i'endered plastic by the admixture of lime-yate g'substantially in the proportion and manner herinbefore setfforth.

In testimony that I claim the foregoing as my own I have hereunto aflixed my signature in presence of two witnesses.

' Y EDWARD GALLAGHER.

Witnesses:

' J. IRWIN HAGERMAN,

. f FRANK MCMAHAN. 

